Observant /(?)/

Ob·serv·ant

Observant

a.
  1. Taking notice; viewing or noticing attentively; watchful; carefully attentive; as, an observant spectator; observant habits.
    Wandering from clime to clime observant stray'd.
  2. Submissively attentive; obediently watchful; regardful; mindful; obedient (to); -- with of, as, to be observant of rules.
    We are told how observant Alexander was of his master Aristotle.
    — Sir K. Digby.

Observant

n.
  1. One who observes forms and rules. [Obs.]
  2. A sycophantic servant. [Obs.]
    Silly ducking observants, That stretch their duties nicely.
  3. An Observantine. (R. C. Ch.)